What about Pluto?

Earth (Actual Planet)	Pluto (Dwarf Planet)
Only planet that is not named after a character in Roman Mythology.	Named after one of the Roman Gods.
Only planet whose surface harbors life.	No known life forms on the surface.
Fifth largest planet in the solar system.	Second largest dwarf planet.
Has an orbit around the sun like all planets.	Has a slight orbit to the planet Neptune.
Has one moon (Luna). Earth is a lot larger than its moon however.	Has one moon (Charon) that is half of Pluto's size.
Primarily consists of water and other various substances	Planet primarily consists of rock and ice
Third planet from the sun	Used to be the 9th planet until rightfully classified as a dwarf planet.

"Pluto." The planets. Web. 15 Nov 2010. <http://kancrn.kckps.k12.ks.us/banneker/students/planets.html>.
" Amazing Facts." Back To Wild. Web. 10 Nov 2010. http://www.backtowild.com/2007/09/28/facts-about-pluto/.

"Earth L Earth Facts, Pictures and Information." The Nine Planets Solar System Tour. Web. 16 Nov. 2010. <http://nineplanets.org/earth.html>. Helped to find information on Earth for the chart.

Fortune, By Good. "Pluto L Pluto Facts, Pictures and Information." The Nine Planets Solar System Tour. Web. 16 Nov. 2010. http://nineplanets.org/pluto.html. Helped to find information on Pluto for the chart.

Team 19